What version the JVM is JIRA running on? What version of JIRA? Did this just start happening? Do you happen to know if this issue occurs for these clients in another browser, (Chrome, Firefox, etc.)?
My gut tells me that this is a Java incompatibility of some sort.
This isn't the exact error you're seeing, but give this workaround a try:
Also, this issue seems to be more related, but is currently marked as cannot reproduce.
If you spend enough time as a Jira admin - whether you are managing a single, mid-sized instance, a large enterprise one or juggling multiple instances at once - you will eventually find yourself in ...
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